2021
The Neglected Role of Bile Duct Epithelial Cells in NASH
Cadamuro M, Lasagni A, Sarcognato S, Guido M, Fabris R, Strazzabosco M, Strain AJ, Simioni P, Villa E, Fabris L. The Neglected Role of Bile Duct Epithelial Cells in NASH. Seminars In Liver Disease 2021, 42: 034-047. PMID: 34794182, DOI: 10.1055/s-0041-1739455.Peer-Reviewed Original ResearchConceptsNonalcoholic fatty liver diseaseNonalcoholic steatohepatitisLiver diseaseInsulin resistancePrevalent liver diseaseBile duct epithelial cellsFatty liver diseaseSubset of patientsCommon pathogenetic mechanismDuct epithelial cellsMultiple biological effectsFibro-inflammationHepatic manifestationNAFLD patientsPortal fibrosisMetabolic syndromeBile ductDuctular reactionDisease progressionPathogenetic mechanismsLiver cancerMetabolic alterationsProgenitor cell compartmentEpithelial cellsDisease
2020
IL-17A/F enable cholangiocytes to restrict T cell-driven experimental cholangitis by upregulating PD-L1 expression
Stein S, Henze L, Poch T, Carambia A, Krech T, Preti M, Schuran FA, Reich M, Keitel V, Fiorotto R, Strazzabosco M, Fischer L, Li J, Müller LM, Wagner J, Gagliani N, Herkel J, Schwinge D, Schramm C. IL-17A/F enable cholangiocytes to restrict T cell-driven experimental cholangitis by upregulating PD-L1 expression. Journal Of Hepatology 2020, 74: 919-930. PMID: 33197512, PMCID: PMC8778963, DOI: 10.1016/j.jhep.2020.10.035.Peer-Reviewed Original ResearchConceptsIL-17A/FIL-17PD-L1T cellsOT-1Mouse modelAutoimmune cholestatic liver diseaseCell death ligand 1Cholangiocyte organoidsMajor histocompatibility complex IBile duct inflammationAntigen-specific CD8Bile duct injuryPD-L1 expressionDeath ligand 1Driver of inflammationTreatment of cholangitisCholestatic liver diseaseResponse of miceImportant protective effectDuct inflammationExperimental cholangitisDuct injuryAdoptive transferCytotoxic CD8
2019
Cholangiocyte pathobiology
Banales JM, Huebert RC, Karlsen T, Strazzabosco M, LaRusso NF, Gores GJ. Cholangiocyte pathobiology. Nature Reviews Gastroenterology & Hepatology 2019, 16: 269-281. PMID: 30850822, PMCID: PMC6563606, DOI: 10.1038/s41575-019-0125-y.Peer-Reviewed Original ResearchConceptsCholangiocyte pathobiologyNew disease-modifying therapiesLiver regenerationRole of cholangiocytesAdvanced liver failureDisease-modifying therapiesExtrahepatic bile ductChronic disease statesAdaptive immune responsesReactive ductular cellsLiver failureBiliary tractLiver diseaseBile ductBile productionImmune responseHepatocyte regenerationImmune systemDuctular cellsCholangiopathyDisease statesCholangiocytesEpithelial cellsAnatomic nicheRepair response
2018
Animal models of cholestasis: An update on inflammatory cholangiopathies
Mariotti V, Cadamuro M, Spirli C, Fiorotto R, Strazzabosco M, Fabris L. Animal models of cholestasis: An update on inflammatory cholangiopathies. Biochimica Et Biophysica Acta (BBA) - Molecular Basis Of Disease 2018, 1865: 954-964. PMID: 30398152, DOI: 10.1016/j.bbadis.2018.07.025.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsAnimal modelsPro-fibrotic signalsChronic liver diseasePrimary biliary cholangitisBile duct ligationFrequent clinical conditionBiliary injuryBiliary cholangitisBiliary obstructionLiver diseaseBiliary epitheliumDuct ligationInflammatory cholangiopathyAdaptive immunityClinical conditionsControversial diseasePathogenetic sequenceCholangiopathyCholestasisExperimental modelCholangitisDiseasePrimary targetChemical inductionCell elements
2017
The deleterious interplay between tumor epithelia and stroma in cholangiocarcinoma
Cadamuro M, Stecca T, Brivio S, Mariotti V, Fiorotto R, Spirli C, Strazzabosco M, Fabris L. The deleterious interplay between tumor epithelia and stroma in cholangiocarcinoma. Biochimica Et Biophysica Acta (BBA) - Molecular Basis Of Disease 2017, 1864: 1435-1443. PMID: 28757170, PMCID: PMC6386155, DOI: 10.1016/j.bbadis.2017.07.028.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsTumor reactive stromaReactive stromaMain cellular componentsDeleterious interplayCyto/chemokinesCellular componentsParacrine signalsPrognosis of cholangiocarcinomaTumor epithelial cellsCell interactionsEarly invasivenessJesus BanalesMarco MarzioniNicholas LaRussoPeter JansenDifferent cell elementsEpithelial cellsEpithelial malignanciesTumor behaviorTumor epitheliumGrowth factorNeoplastic cellsTumor progressionCentral roleStromal componentsPathophysiologic implications of innate immunity and autoinflammation in the biliary epithelium
Strazzabosco M, Fiorotto R, Cadamuro M, Spirli C, Mariotti V, Kaffe E, Scirpo R, Fabris L. Pathophysiologic implications of innate immunity and autoinflammation in the biliary epithelium. Biochimica Et Biophysica Acta (BBA) - Molecular Basis Of Disease 2017, 1864: 1374-1379. PMID: 28754453, PMCID: PMC5785585, DOI: 10.1016/j.bbadis.2017.07.023.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsToll-like receptorsLiver damageCystic fibrosis-related liver diseaseInnate immunityDamage-associated molecular patternsEpithelial innate immunityPro-inflammatory behaviorBiliary epithelial cellsNumber of receptorsJesus BanalesMarco MarzioniNicholas LaRussoPeter JansenLiver injuryLiver diseaseBile flowInflammatory processBiliary epitheliumInflammatory responsePathophysiologic implicationsReparative processesNumber of evidencesFirst defense lineCholangiocytesMolecular patternsAnimal models of biliary injury and altered bile acid metabolism
Mariotti V, Strazzabosco M, Fabris L, Calvisi DF. Animal models of biliary injury and altered bile acid metabolism. Biochimica Et Biophysica Acta (BBA) - Molecular Basis Of Disease 2017, 1864: 1254-1261. PMID: 28709963, PMCID: PMC5764833, DOI: 10.1016/j.bbadis.2017.06.027.Peer-Reviewed Original ResearchConceptsBile acid metabolismBiliary injuryMouse modelAnimal modelsDistinct immune systemCholestatic liver injuryAcid metabolismJesus BanalesMarco MarzioniNicholas LaRussoPeter JansenBiliary repairLiver injuryDuctular reactionLiver repairObstructive cholestasisDisease progressionPeribiliary inflammationMain phenotypic featuresBiliary dysgenesisViral infectionImmune systemLiver homeostasisLiver phenotypeHuman setting
2016
The cystic fibrosis transmembrane conductance regulator controls biliary epithelial inflammation and permeability by regulating Src tyrosine kinase activity
Fiorotto R, Villani A, Kourtidis A, Scirpo R, Amenduni M, Geibel PJ, Cadamuro M, Spirli C, Anastasiadis PZ, Strazzabosco M. The cystic fibrosis transmembrane conductance regulator controls biliary epithelial inflammation and permeability by regulating Src tyrosine kinase activity. Hepatology 2016, 64: 2118-2134. PMID: 27629435, PMCID: PMC5115965, DOI: 10.1002/hep.28817.Peer-Reviewed Original ResearchConceptsBiliary epithelial cellsLiver diseaseToll-like receptor 4 activityToll-like receptor 4 responsesCystic fibrosis transmembrane conductance regulatorToll-like receptor 4Nuclear factorEpithelial cellsProinflammatory cytokine productionNovel therapeutic targetEpithelial barrier functionActivated B cellsFibrosis transmembrane conductance regulatorTransmembrane conductance regulatorCytokine productionEpithelial inflammationInflammatory cellsInflammatory processReceptor 4Biliary damageInflammatory responseInflammatory cholangiopathyProtective effectBile secretionImmune pathways
2015
Retracted: Posttranslational regulation of polycystin‐2 protein expression as a novel mechanism of cholangiocyte reaction and repair from biliary damage
Spirli C, Villani A, Mariotti V, Fabris L, Fiorotto R, Strazzabosco M. Retracted: Posttranslational regulation of polycystin‐2 protein expression as a novel mechanism of cholangiocyte reaction and repair from biliary damage. Hepatology 2015, 62: 1828-1839. PMID: 26313562, PMCID: PMC4681612, DOI: 10.1002/hep.28138.Peer-Reviewed Original ResearchConceptsEndoplasmic reticulum stressorsGene expressionAutophagy pathwayExtracellular signal-regulated kinase 1/2 (ERK1/2) pathwayProtein expressionUbiquitin-like proteinSignal-regulated kinase 1/2 pathwayProteasome inhibitor MG-132HIF-1α transcriptional activityKinase 1/2 pathwayProtein kinase APC2 gene expressionPC2 expressionInhibitor MG-132Activation of ERK1/2Transient receptor potential (TRP) channel familyNonselective calcium channelPosttranslational regulationMember 1 proteinPolycystin-2Treatment of cholangiocytesKinase ATranscriptional activityChannel familyMG-132
2013
Protein kinase a‐dependent pSer675‐β‐catenin, a novel signaling defect in a mouse model of congenital hepatic fibrosis
Spirli C, Locatelli L, Morell CM, Fiorotto R, Morton SD, Cadamuro M, Fabris L, Strazzabosco M. Protein kinase a‐dependent pSer675‐β‐catenin, a novel signaling defect in a mouse model of congenital hepatic fibrosis. Hepatology 2013, 58: 1713-1723. PMID: 23744610, PMCID: PMC3800498, DOI: 10.1002/hep.26554.Peer-Reviewed Original ResearchConceptsAutosomal recessive polycystic kidney diseaseCongenital hepatic fibrosisCaroli's diseaseΒ-cateninHepatic fibrosisRac-1 inhibitionIntrahepatic bile ductsRecessive polycystic kidney diseasePotential therapeutic targetPolycystic kidney diseaseStimulation of cAMPRac-1 activityE-cadherin expressionBile ductKidney diseaseLiver pathologyCystic dysplasiaMouse modelTherapeutic targetTranscriptional activityNuclear translocationDiseasePKA blockerCholangiocytesFibrosis
2012
Cyclic AMP/PKA‐dependent paradoxical activation of Raf/MEK/ERK signaling in polycystin‐2 defective mice treated with sorafenib
Spirli C, Morell CM, Locatelli L, Okolicsanyi S, Ferrero C, Kim AK, Fabris L, Fiorotto R, Strazzabosco M. Cyclic AMP/PKA‐dependent paradoxical activation of Raf/MEK/ERK signaling in polycystin‐2 defective mice treated with sorafenib. Hepatology 2012, 56: 2363-2374. PMID: 22653837, PMCID: PMC3460040, DOI: 10.1002/hep.25872.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntineoplastic Agents, HormonalBenzenesulfonatesBile DuctsCaspase 3Cell ProliferationCells, CulturedCyclic AMP-Dependent Protein KinasesCystsDrug Therapy, CombinationEpithelial CellsKi-67 AntigenLiver DiseasesMAP Kinase Signaling SystemMiceMice, KnockoutNiacinamideOctreotidePhenylurea CompoundsPhosphorylationProtein Kinase InhibitorsProto-Oncogene Proteins B-rafProto-Oncogene Proteins c-rafPyridinesSorafenibTRPP Cation ChannelsConceptsRaf-1Cell proliferationB-RafPhosphorylated ERKRaf kinase activitySignal-regulated kinase 1/2 pathwayRAF inhibitorsCyclic adenosine monophosphateRaf/MEK/ERKCyst growthDefective miceKinase 1/2 pathwayParadoxical activationCAMP/PKAMEK/ERKPolycystin-2Kinase AKinase activityWT cellsDependent activationERK1/2 phosphorylationInhibitor 14Epithelial cellsAdenosine monophosphateERKAltered store operated calcium entry increases cyclic 3′,5′‐adenosine monophosphate production and extracellular signal‐regulated kinases 1 and 2 phosphorylation in polycystin‐2‐defective cholangiocytes
Spirli C, Locatelli L, Fiorotto R, Morell CM, Fabris L, Pozzan T, Strazzabosco M. Altered store operated calcium entry increases cyclic 3′,5′‐adenosine monophosphate production and extracellular signal‐regulated kinases 1 and 2 phosphorylation in polycystin‐2‐defective cholangiocytes. Hepatology 2012, 55: 856-868. PMID: 21987453, PMCID: PMC3272110, DOI: 10.1002/hep.24723.Peer-Reviewed Original ResearchMeSH KeywordsAdenylyl CyclasesAnimalsBile DuctsCalciumCalcium ChannelsCalcium SignalingCells, CulturedCyclic AMPCyclic AMP-Dependent Protein KinasesHomeostasisMembrane GlycoproteinsMiceMice, KnockoutMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Models, AnimalPhosphorylationSignal TransductionStromal Interaction Molecule 1TRPP Cation ChannelsVascular Endothelial Growth Factor AConceptsSensor stromal interaction molecule 1Adenylyl cyclase type 6Extracellular signal-regulated kinases 1Signal-regulated kinases 1Overproduction of cAMPStromal interaction molecule 1Orai channelsWild-type miceSOCE activationCAMP productionRapamycin (mTOR) signalingKinase 1ERK pathwayERK1/2 activationHuman diseasesWT cellsMammalian targetDependent activationSTIM-1CAMP/Inappropriate activationCyst growthCystic cholangiocytesPolycystic liver diseaseActivationDevelopment of the bile ducts: Essentials for the clinical hepatologist
Strazzabosco M, Fabris L. Development of the bile ducts: Essentials for the clinical hepatologist. Journal Of Hepatology 2012, 56: 1159-1170. PMID: 22245898, PMCID: PMC3328609, DOI: 10.1016/j.jhep.2011.09.022.Peer-Reviewed Original ResearchConceptsLiver diseaseBile ductBiliary structuresFibropolycystic liver diseaseExtrahepatic biliary treeBiliary developmentLiver repair mechanismsHepatocellular damageBiliary treeDuctular reactionLiver repairReparative responseAlagille syndromePathogenic aspectsClinical hepatologistsCholangiopathyGrowth factorParacrine signalsEmbryonic lifeDiseaseDuctRepair mechanismsHepatologistsSyndromeTranscription factors
2011
Loss of CFTR Affects Biliary Epithelium Innate Immunity and Causes TLR4–NF-κB—Mediated Inflammatory Response in Mice
Fiorotto R, Scirpo R, Trauner M, Fabris L, Hoque R, Spirli C, Strazzabosco M. Loss of CFTR Affects Biliary Epithelium Innate Immunity and Causes TLR4–NF-κB—Mediated Inflammatory Response in Mice. Gastroenterology 2011, 141: 1498-1508.e5. PMID: 21712022, PMCID: PMC3186841, DOI: 10.1053/j.gastro.2011.06.052.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAnti-Bacterial AgentsBile DuctsCholagogues and CholereticsCholangitisColitisCytokinesDextran SulfateDisease Models, AnimalEpithelial CellsHEK293 CellsHumansImmunity, InnateInflammation MediatorsKeratin-19Leukocyte Common AntigensLipopolysaccharidesMiceMice, Inbred C57BLMice, Inbred CFTRMice, KnockoutNeomycinNF-kappa BPhosphorylationPolymyxin BSrc-Family KinasesTime FactorsToll-Like Receptor 4TransfectionUrsodeoxycholic AcidConceptsCFTR KO miceBiliary epitheliumCystic fibrosisPortal inflammationBiliary damageInflammatory responseInnate immunityGut-derived bacterial productsTLR4 inhibitor TAK-242Toll-like receptor 4Cystic fibrosis transmembrane conductance regulatorInhibitor TAK-242Wild-type littermatesActivation of NFNuclear factor κBOral neomycinTLR4-NFTAK-242Liver damagePathogenetic roleBile flowDuctular reactionReceptor 4Cytokine secretionUrsodeoxycholic acid
2009
Diferentially expressed adenylyl cyclase isoforms mediate secretory functions in cholangiocyte subpopulation
Strazzabosco M, Fiorotto R, Melero S, Glaser S, Francis H, Spirli C, Alpini G. Diferentially expressed adenylyl cyclase isoforms mediate secretory functions in cholangiocyte subpopulation. Hepatology 2009, 50: 244-252. PMID: 19444869, PMCID: PMC2738985, DOI: 10.1002/hep.22926.Peer-Reviewed Original ResearchConceptsSoluble adenylyl cyclaseAdenylyl cyclasesGene expressionAC isoformsCyclic adenosine monophosphateAC gene expressionDifferent tissue specificitiesGroup of enzymesAdenylyl cyclase isoformsTissue specificityCholangiocyte secretionCyclase isoformsIsoformsSAC inhibitorIsohydric changesAdenylyl cyclaseIsoform expressionSACS geneReal-time polymerase chain reactionGenesAdenosine monophosphateAC8ExpressionCAMP levelsCAMP production
2008
Functional Anatomy of Normal Bile Ducts
Strazzabosco M, Fabris L. Functional Anatomy of Normal Bile Ducts. The Anatomical Record 2008, 291: 653-660. PMID: 18484611, PMCID: PMC3743051, DOI: 10.1002/ar.20664.Peer-Reviewed Original ResearchConceptsBile ductBiliary treeExtrahepatic bile ductSmall bile ductsNormal bile ductsLiver progenitor cellsBile productionBiliary epitheliumMajor ductsSecretory functionVascular structuresProgenitor cellsCholangiocyte functionFunctional anatomyBileDuctCholangiocytesIntestineFunctional interactionMorphological heterogeneityNerveGallbladderVariety of functionsEpithelium
2007
Epithelial expression of angiogenic growth factors modulate arterial vasculogenesis in human liver development
Fabris L, Cadamuro M, Libbrecht L, Raynaud P, Spirlì C, Fiorotto R, Okolicsanyi L, Lemaigre F, Strazzabosco M, Roskams T. Epithelial expression of angiogenic growth factors modulate arterial vasculogenesis in human liver development. Hepatology 2007, 47: 719-728. PMID: 18157837, DOI: 10.1002/hep.22015.Peer-Reviewed Original ResearchConceptsVascular endothelial growth factorHepatic arteryAngiogenic growth factorsBile ductAngiopoietin-1Tie-2Growth factorAngiopoietin-2VEGFR-1Endothelial cellsMural cellsCognate receptorsIntrahepatic bile ductsClose anatomical relationshipFetal human liverDifferent gestational agesEndothelial growth factorDifferent maturational stagesGestational ageHuman liver developmentImmunohistochemical expressionDuctal plateEpithelial expressionPortal vasculatureArtery
2001
Ductular morphogenesis and functional polarization of normal human biliary epithelial cells in three-dimensional culture
Ishida Y, Smith S, Wallace L, Sadamoto T, Okamoto M, Auth M, Strazzabosco M, Fabris L, Medina J, Prieto J, Strain A, Neuberger J, Joplin R. Ductular morphogenesis and functional polarization of normal human biliary epithelial cells in three-dimensional culture. Journal Of Hepatology 2001, 35: 2-9. PMID: 11495037, DOI: 10.1016/s0168-8278(01)00078-2.Peer-Reviewed Original ResearchConceptsCollagen gel cultureHuman biliary epithelial cellsEpithelial cellsGel cultureGrowth factorHuman hepatocyte growth factorThree-dimensional cultureBiliary epithelial cellsThree-dimensional aggregatesNormal human biliary epithelial cellsFoetal bovine serumMorphogenesisCell typesAnion exchanger 2Hepatocyte growth factorFunctional polarizationFunctional differentiationFunctional markersExchanger 2Monolayer culture systemCentral lumenPhenotypic markersCollagen gelsNumber of aggregatesCulture systemProinflammatory Cytokines Inhibit Secretion in Rat Bile Duct Epithelium
Spirlı̀ C, Nathanson M, Fiorotto R, Duner E, Denson L, Sanz J, Di Virgilio F, Okolicsanyi L, Casagrande F, Strazzabosco M. Proinflammatory Cytokines Inhibit Secretion in Rat Bile Duct Epithelium. Gastroenterology 2001, 121: 156-169. PMID: 11438505, DOI: 10.1053/gast.2001.25516.Peer-Reviewed Original ResearchConceptsProinflammatory cytokinesFluorescein-labeled dextranIL-1Interferon gammaCAMP-dependent fluid secretionCystic fibrosis transmembrane conductance regulatorBile duct epitheliumRat bile duct epitheliaTumor necrosis factorCyclic adenosine monophosphate levelsSecretin receptorAdenosine monophosphate levelsBile duct unitsDuctular cholestasisPortal inflammationCholestatic disordersIL-6Inflammatory cytokinesTNF-alphaBiliary epitheliumNecrosis factorCellular cyclic adenosine monophosphate (cAMP) levelsDuct epitheliumPurinergic agonistsSR expression
2000
Characterization and Isolation of Ductular Cells Coexpressing Neural Cell Adhesion Molecule and Bcl-2 from Primary Cholangiopathies and Ductal Plate Malformations
Fabris L, Strazzabosco M, Crosby H, Ballardini G, Hubscher S, Kelly D, Neuberger J, Strain A, Joplin R. Characterization and Isolation of Ductular Cells Coexpressing Neural Cell Adhesion Molecule and Bcl-2 from Primary Cholangiopathies and Ductal Plate Malformations. American Journal Of Pathology 2000, 156: 1599-1612. PMID: 10793072, PMCID: PMC1876925, DOI: 10.1016/s0002-9440(10)65032-8.Peer-Reviewed Original ResearchConceptsDuctal plate malformationNeural cell adhesion moleculeReactive ductulesDuctular cellsLiver diseaseKi-67Cell adhesion moleculeDuctal plateChronic cholestatic liver diseaseDifferent chronic liver diseasesAdhesion moleculesReactive bile ductulesProliferation marker Ki-67Chronic liver diseaseCholestatic liver diseaseDuctal plate cellsBcl-2Different gestational agesDuctular reactive cellsGestational ageLKM-1Neuroendocrine featuresHEA 125Cirrhotic liverImmunohistochemical expression